Question: Can a permanently attached muzzle attachment which brings the length of a rifle barrel to 16 inches or greater be removed and immediately replaced with a muzzle attachment of a different design?

Answer: Yes, provided that the replacement is performed expeditiously, that the new attachment is of sufficient length to allow the resulting barrel to measure greater than 16 inches in length, and the method of attachment meets ATF guidelines for permanent attachment.

Question: Can a permanently attached muzzle attachment which brings the length of a rifle barrel to 16 inches or greater be removed and immediately replaced with a muzzle attachment of a different design?

Answer: Yes, provided that the replacement is performed expeditiously, that the new attachment is of sufficient length to allow the resulting barrel to measure greater than 16 inches in length, and the method of attachment meets ATF guidelines for permanent attachment.

BTW, that mill looks just like the one I just got. Now I have to tool up! Is yours an Enco?

Praise the LORD, an' pass the amma-nition!!!

USE GOOGLE TO SEARCH THE FORUM: Search for, "saiga 12 forum whatever you are looking for". Read before posting questions. The stickies (top of the list of threads) have most of the info newbies will need.

My guess is they used one with the bulgarian 24x1.5mm threads and re-threaded the barrel for that when they reassembled. Also I cant tell if it has the insert inside or not.

The FH goes over the barrel (like a reflex suppressor or fake can). A 13" barrel would end much further forward than where the 4 piece 'appears' to attach and there isn't enough barrel diameter and thickness to thread the barrel 24x1.5. I would guess that the 4 piece started life as a 22mm (Yugo Krink threading). Whatever was done, it looks pretty slick.